Nemoto Ritsuko is the girlfriend of Kuroki Tamotsu. Both are 22 years old. Ritsuko lives with her father, Shingo, a piano tuner and city hall clerk. Meanwhile, Tamotsu is a small club's pianist in Yokohama. Ritsuko, close to the age of marriage, is worried and forms a concrete plan. Ritsuko's sister, Kinue, arranges for her to meet her husbands colleague Abe Goro. Tamotsu and Ritsuko wind up quarreling on their date the following day where Tamotsu eventually promises to meet her father. However, due to their conflicting future life plans, their relationship begins to fray. They begin to go their separate ways, however...